Magneto-contact-point protector



H. BOWERS. MAGNETO CONT- AIJT POINT PROTECTOR.

APPLICATION FILED DEC. 3,19I9.

Patented Jan. 11, 1921.

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UNITED STATES HENRY A. nownns, or mivins'rown, new YORK.

MAGNETO-CONTACT-POINT PROTECTOR.

Specification of Letters Patent.

Patented Jan. 11, 1921.

Application filed December 8, 1919. Serial No. 343,327.

T 0 allwhom it may concerns Be it known that I, HENRY A. BOWERS, a citizen of the United States, residing at the city of Jamestown, in the county of Chautauqua and State of New York, have invented certain new and useful Improvements in Magneto-Contact-Point Protectors, of which the following, taken in connection with the accompanying drawings, is a specification.

The invention relates to ignition devices for internal explosion engines; and the object of the improvement is to provide protecting means for the magneto contact point, as used, for example, in an automobile, so that dirt of every description will be eX cluded from said point and the desired perfect contact will be obtained without interruption. One of the main difficulties with said contact point is that as the fly wheel with magneto assembled thereon revolves in its oil filled case, small particles of dirt work in between said contact point and magnet, thereby impairing the ignition. The contact point protector hereinafter de scribed excludes dirt from said point and insures the constant circuit required for the steady running of the engine; and the invention consists in the novel features and combinations hereinafter set forth and claimed.

In the drawings, Figure 1 is a side elevation of the magneto contact assembly attached in the magnet case, the point protector being shown in dotted outline in re .lation to the magneto coil assembly; and Fig. 2 is a sectional View of the casing showing a portion of the magneto coil as sembly each side of the contact point bearing, with the contact point protector in. section; and Fig. 3 is a similar view with said contact point assembly removed from the casing. Fig. 4 is a perspective view of the contact point protector removed from the contact point assembly; and Fig. 5 is a perspective view of the felt ring portion of said protector; and Fig. 6 is a perspective view of the struckup sheet metal holder for said felt ring.

Like characters of reference refer to corresponding parts in the several views.

The numeral 10 designates the casing for the magneto coil assembly and magneto fly wheel as designed for the ignition means of an automobile, and the numeral 11 designates the magneto coil assembly.

The numeral 12 designates the contact point assembly which consists of the point 13 which extends against the contact block 14 of the magneto coil assembly 11, being held in contact by means of the spring 15. The contact point 13 is held in position in the casing 10 by means of the holding plate 16 which is attached to said casing 10 by means of suitable screws 17 and has the adjusting thumb screw 18 for adjusting'the tension of the point 13, a lock nut 19 being provided on the screw 18 to hold the adjustment in fixed position. i

The contact point protector consists of the preferably struck-up metallic holder 20 which has the sleeve 21 which extends up within the holding plate 16 for said contact point 13, thereby holding the portion 20 firmly in position in relation to said point. Said metallic portion has a downwardly turned outer rim 22 which preferably inclines inward toward its lower edge to re ceive a ring 23, preferably of felt or some equally resilient and fibrous material which may be sprung into the holder 20 within the inwardly inclined rim 22 so that said rim 22 holds the felt ring 23 firmly in position.

It is now apparent that when the sleeve 21 of the holder 20 for the felt wiper ring 23 is inserted within the opening 24: for the stem of the contact point 13 and the spring 14, the felt ring 23 extends around said. point 13 at a spaced distance therefrom and against the magneto, thereby accomplishing the desired purpose of the exclusion of dirt to permit uninterrupted electric circuit and ignition for the combustion within the engine. I

I claim as new: 1. A magneto contact point protector comprising a point-encircling member, and a holder therefor having a disk-shaped body formed with an annular, conical flange on one side embracing the member and securing the same to the disk-shaped body, and a sleeve extending from the opposite side of said body for attaching the latter to a magneto contact device.

2. In combination with a magneto contact device, a protector for the point there of embodying a point-encircling, fibrous member, and a sheet metal holder having the member secured to one side and a sleevelike part extending from the central portion of the opposite side for telescoping in the contact device to thereby secure the holder to said device, the body portion of said holder seating on the adjacent end of said device.

3. An attachment for magneto contact devices, comprising a disk-like body adapted to seat on the lower end of a contact device about the contact point thereof, means extending from said body for engagement within the contact point chamber of said device, an annular, inturned marginal flange on the opposite side of the body, and a point protector formed of resilient material and adapted to be sprung within the flange for securement to the body.

In testimony whereof I have aflixed my signature in the presence of two witnesses.

HENRY A. BOWERS.

Witnesses:

C. V. SWANSON, H. P. ANDERSON. 

